Apparatus for manufacturing glass tiles.



W. T. NIGHOLLS. APPAHATUB FOR MANUFACTURING GLASS TILES.

LPPLIOATION FILED K0120, 1907.

Patented Jan. 5, 1909.

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UNITED STATES WILLIAM T. NICHOLLS, OF WELLSBURG, WEST VIRGINIA.

APPARATUS FOR MANUFACTURING GLASS TILES.

To all whom it may concern:

Be it l rnown that I, W ILLIAM T. NICH- oLLs, of VVellsburg, Brooke county, West Virginia, have invented a new and useful Atpparatus for-Manufacturing Glass Tiles, 0

which the following is a full, clear, and exact description, reference being had to the accompanying drawings. forming part of this specification, in which 1 igtre 1 is a vertical section of tile-form ing apparatus embodying my invention; and l. ig. 2- 1s a section on the line IIII of l ig. 1.

, My invention has relation to apparatus for the manufacture of glass tiles of the class which are provided with undercut rils or projections on their inner or seating faces, and is designed to provide apparatus of this character by means of which a plurality of tiles can be pressed into shape by one and the same operation.

The precise nature of my invention will be best understood by reference to the accompanying drawings, in which I have shown one form of apparatus embodying my invention, and which will now be described, it being premised, however, that various changes may be made in the details of construction and arrangement, without departing from the spirit and scope of my invention as defined in the appended claims.

In the drawings, the numeral 2 designates a supporting surface or table, and 3 a mold box supported on said surface or table through the medium of the anti-friction rollers 4. The box is preferably hinged to the table at one side, as indicated at 5, the hinged connection being a slotted one to permit a reci rocating movement of the box upon the rol ers 4.

6 is a top ring, which is removably seated upon the mold-box 3, and which is formed with the interior opposite parallel cam surfaces or inclines 7.

8 designates a plunger, which may be 0 erated by any suitable means known in t is art. Secured to the bottom face of this plunger is a presser plate 9, having in its under surface a plurality of undercut recesses 10 which are designed to form the undercut ribs or projections on onesurface of the tile, as clearly shown lig. 1. This pressure plate is formed at opposite edges with the cam surfaces or inclines 11 corresponding to the cam surfaces or inclines 7 of t e top ring, so that when the resser plate is entered into the mold an withdrawn Specification of Letters Patent.

Application filed. November 20, 1907.

actuated by any suitable means.

lug 21 secured to the plate or blade 13, and

Patented Jan. 5, 1909.

Serial No. 402,995.

therefrom, the engagement of these cam surfaces or inclines will cause a movement of the mold box uponthe anti-friction rollers 4 to form the undercut projections on the tile and to permit the presser plate to clear these projections as it is withdrawn.

The mold box is of suflicient size to form a plurality of tiles at the same operation, and its bottom wall has shallow ribs or projections 12 which partially divide the interior of the box into compartments, each of the proper dimensions for one tile. Cooperating with these ribs or projections 12, for the prupose of more completely severing the body of glass into the separate tile shapes,-

the presser plate is rovided with the cutting-off plates or bla. es 12, which are seated to move in vertical slots in the presser plate. These cutting-off blades or knives may be In the apparatus shown in the drawings, a rocker shaft 14 is journaled in the plun er with a lever arm 15 secured thereto, an to which is connected an actuating lever 16. The shaft 14 also carries opposite arms 17, which are connected by links 18 with to gle links 19. These toggle links are arranger in pairs, one link of each pair being pivoted at 20 to a the other link being ivoted on a pin or shaft 22 extending tfirough the lunger. The operating devices for the blades just described are placed within slots 23 in the plunger.

The 0 eration is as follows :A batch of glass is p aced in the mold box and the plunger is operated to enter the presser plate or into the box and press the glass into form. The pressure on the plunger is then slightly relieved and the lever 16 is actuated to force the cutting-off blades 13 through the presser plate into the mold, as shown in the drawmgs, thereby partially severing the formed glass sheet into the desired number of tile sha es. The op osing faces of the cuttingofi lades 13 and of the shallow ribs or projections 12 are preferably of V-shape so as to more nearly sever the glass at the edges of the individual tiles to thereby render the subsequent complete se aration easier. T he movement of the mold OX upon the rollers 12 enables the presser plate to readily free itself from the undercut projections in the manner above described.

By the use of the movable cutting-off blades, the ribs or projections 12 on the botcompartment of the box to aaetller the action of the plunger and presser plate, a

ee issh ine the erase aetiea at the glass in the several compartments Any desired number of compartments may 7 be provided, With a corresponding number of the cutting-off blades. "These compartments may be 01 various sizes and forms, according to the size and shape of tiles which it is desired to make. Anyother means of well-known character may employed to provide the necessary relative lateral motion of the plrnger and mold box to enable'the presser plate to readily Withdraw or clear itself from the undercut projections. Varioi s other means may beprovided foroperatingthe utter blades," and nnmerors changes may be made the details of construction and arrangement of the parts without departin from the spirit and scope of my invention.

1. In apparatus for forming glass tiles, a mold box having a shallow projection on its bottom Wall, and partially" separating the box into compartments, a pressing device arranged to enter the box and having underci t projections on its under si r face; means for ell'ecting a relative lateral movement of the box and pressing device, and a onttingoff member carried bythe pressing device and movable through its forming surface in line with the shallovv projection'on the bottom of the mold box; substantially as described. i

' 21. In apparatus {or the manufacture glass tiles having undercut projections, a seal- 1 has hav n esrlerce recesses in its 'Workingface, a pressing device arranged to enter the box means for effecting a relative lateral movement of the box and pressing dense a mo cutting-Off membe ca ried the pressing device, and means for actuating the cuttingofi member; substantially as described.

3. In apparatus for manufacturing glass tiles, a mold box; having a plurality of shallow ribs or projections on its bottom Wall, a plun er adapted to enter the top of the box and" aving forming surface on its under side, .a series of movable outting otl members or blades carried by the plunger and arranged to be projected throi g-h the forming sprface in line With the ribs orprojections of the box, and means for actuating said members or blades; substantially as described.

4, In ap aratits for the mam factrire of glass tiles aving' undercut projections, a movably supported mold box, a plrnger arranged to enter said box and having undercut' recesses in its lower face, said plunger and box having cooperating camsrrfaces, and the box having shallow ribs or projections on its bottom, and movable cutting-off members or blades carried by the p11 nger in line with the ribs or proje'c' tions' of the box; substantially as described In testimony whereof, ljhave hereunto set hand. WILLIAM T. NICHOLLS, Witnesses;

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